13.13.17 Fc 9: Asub Startup Of Asynchronous Subprograms - Siemens SINUMERIK 828D Function Manual

Hide thumbs Also See for SINUMERIK 828D:

Table of Contents

13.13.17 FC 9: ASUB startup of asynchronous subprograms

The FC ASUB can be used to trigger any functions in the NC. Before an ASUB can be started from the PLC, it

must have been selected and parameterized by an NC program or by FB 4 (PI service ASUB). The channel and

the interrupt numbers for the parameters in FC 9 must match here.

Once prepared in this way, it can be started at any time from the PLC. The NC program running on the channel in

question is interrupted by the asynchronous subprogram. Only one ASUB can be started in the same channel at

a time. If the start parameter is set to logical 1 for two FC 9s within one PLC cycle, the ASUBs are started in the

sequence in which they are called.

The start parameter must be set to logic 0 by the user once the ASUB has been terminated (Done) or if an error

has occurred.

For the purpose of job processing, every FC ASUB requires its own WORD parameter "Ref" from the global user

memory area. This parameter is for internal use only and must not be changed by the user. The parameter "Ref"

is initialized with the value 0 in the first OB 1 cycle and, for this reason, every FC 9 must be called absolutely.

Alternatively, the user can initialize parameter "Ref" with a value of 0 during startup. This option makes

conditional calls possible. When a conditional call is activated by parameter "Start" = 1, it must remain active until

parameter "Done" has made the transition from 1 to 0.

The FB 4 call must be terminated before the FC 9 can be started. FC 9 cannot be started if

"Emergency off" is set. Neither can FC 9 be started if the channel reset is active.

Declaration of the function

FUNCTION FC 9 : VOID

//NAME :ASUP

Basic Functions

Function Manual, 09/2011, 6FC5397-0BP40-2BA0

P3: Basic PLC Program for SINUMERIK 840D sl

13.13 Block descriptions

Sinumerik 840d sl